Cushion strip



April 7, 1931. c. w. HOWLETT ET AL CUSHION STRIP Filed Dec. '7, 1928 By Aawoaz P15 /1/ TCHELL.

A TTORNEY5.

Patented Apr. 7, 1931 CLARENCE W. HOWLETT AND RANDOLPH MITCHELL, OF KOKOMO, INDIANA.

CUSHION STRIP Application filed Deceinber 7, 1928. Serial No. 324,561.

This invention relates 'to a cushion sea-ling strip.

The chief object of the invention is to provide a cushion sealing strip which has suitable strength for support and anchoring purposes.

The chief feature of the invention consists in providing a resilient, substantially U- or.

channel-shaped cushion stripwith a backing or anchoring member the same havingan interlocking relation and said member being suitably arranged for rigid strip anchorage. The full nature of the invention will be understood from the accompanying drawings and i the following description and claims.

In the drawings Fig. 1 is a perspective View of the resilient portion of one form of sealing strip. Fig. 2 is a transverse section of one form of strip prior to completion. Fig. 3 is a similar view of a modified form in a similar state. Fig. 4 is a perspective View of a completed strip formed by a third process. Fig. 5 is a perspective View of a 5 portion of one form of anchoring member. Fig. 6 is a cross sectional view of a mold with a reinforcing strip and sponge rubber therein prior to curing.

In the drawings 10 indicates an elongated body of cushion material such as sponge rubher, or the like, and said body is substantially U- or channel-shaped in cross section thereby providing the sealing groove 11 and side walls 12. Each side wall below the level of 5 the groove herein includes a longitudinally extending anchoring groove 13.

One form of support member includes a base 14:, sides 15, and inturned flanges 16. Also said base preferably is provided with a longitudinal central series of openings 17 The most diflicult method of uniting the sealing portion of the strip to the anchorage portion thereof would be by longitud nally telescoping or nesting the cushion portion in the support portion to form a completed strip as shown in Fig. 4. 4

One of the simplest forms of forming the strip as shown in Fig. 4 is to provide a suitable amount of sponge rubber material and position the same in a mold 110, see Fig. (3,

having an interior like the exterior shown in Fig. 4 and position in said mold the anchoring strip 14 so that upon curing, etc., the sponge rubber, or the like, will assume the form shown in Fig. 4, or a similar form, and in said curing be simultaneously anchored to the anchoring strip.

\Vhen this last mentioned or the first mentioned process is not employed, another process might be employed, and this may be of multiple or single character. A strip 114 having the openings 117 and the sides 115 with inturned flanges 116 has the sides extending outwardly and the flanges extending upwardly to be received transversely in the channel and thus elampingly lock the cushion portion of the final strip in counterdistinction to longitudinal seating first described. After positioning as shown in Fig. 2, a suitable tool is adapted to move the side walls inwardly until the flanges 116 lie substantially parallel to the base portion 114:. When thus positioned said inwardly extending flanges are seatable in the longitudinal grooves 13 of the strip 10 and clampingly lock the cushion to the anchorage.

It will be readily apparent that the open- '7 ing 17 permits the passage of nails, brads, and the like therethrough for anchoring the entire strip construction to a convenient support, and since the cushion material is of sponge rubber or the like it will readily yield to embed the head of the headed anchoring means within the cushioning material until it bears directly upon the inner face of the base 14 of the anchoring strip adjacent the opening 17 or lies adjacent thereto in embedded relation.

\Vhen the strip shown in Fig. 4 is employed the anchoring means such as a nail, or the like, in its passage through the strip for anchoring purposes carries with it a portion of the cushion material included within the outlines of the opening so that passage between the anchoring nail or staple and the strap or strip also is completely sealed. The forms of the invention shown in Figs. 2 and Cl while not necessarily positively possessing this feature nevertheless have the same tendency to seal the passage between the anchoring member such as the nail and the anchoring strip.

While the anchoring strip has been shown U-shaped in character with inturned ends, said metallic strap need not be of such formation for either side and inturned portion or inturned portion might be omitted, the chief feature of the invention consisting of a lon gitudinal interlocking relationship between a cushion strip and an anchoring strip, the latter preferably being suitably pre-formed or of such character to permit the ready passage of transverse anchoring means through the completed strip, and the sealing portion being of such character as to permit substantially ready passage therethrough of the anchoring means and usually having insufficient inherent rigidity to permit of the rigid anchorage of the strip.

It will be apparent that to economically form a cushion strip with a substantially rigid anchoring base of the general character hereinbefore specified, and of relatively long lengths, the form of the inventio shown in Fig. 4 is preferred. I

In the foregoing and the claims, the term curing is used synonymously with the term vulcanizing as now understood in the art.

The invention claimed is:

1. A reinforced sealing strip including an elongated cushion body of very readily deformable material such as sponge rubber, said body having a longitudinally-directed, relatively shallow sealing groove therein and a pair of substantially parallel oppositelydirected, longitudinally-extending anchoring grooves in spaced relation with the firstmentioned groove and on opposite sides thereof, and an elongated relatively rigid anchoring strip including an intermediate anchoring base portion and a pair of substantially parallel op ositely and inwardlydirected and longitu inally extending locking flanges in spaced relation therewith, said flanges being receivable by and terminating within said anchoring grooves for anchoring the base portion of the cushion body to the anchoring strip and for reinforcing the cushion body and partially retaining the same in the desired body formation, said body overlapping said flanges and being at least as wide as the same.

2. A reinforced sealing strip including an elongated cushion body of very readily deformable material such as sponge rubber, said body having a longitudinally directed sealing groove therein and a pair of substantially parallel, oppositely directed, longitudinally extending anchoring grooves in spaced relation with the first mentioned groove and on opposite sides thereof, and an elongated relatively rigid anchoring strip including a metallic anchoring base portion having a longitudinal series of anchoring apertures therein, and a pair of substantially parallel, oppositely and inwardly directed, and longitudinally extending locking flanges in spaced relation, said flanges being recelvable by said anchoring grooves of the body for anchoring the base portion of the body to the anchoring strip and for reinforcing the cushion body and partially retaining the same in the desired body formation.

3. A device as defined by claim 2 characterized by said cushion body including projections extending into and filling the anchoring apertures in said strip.

In Witness whereof, We have hereunto affixed our si natures.

LARENCE W. HOWLETT. RANDOLPH MITCHELL. 

